在这项研究中,通过六氯环三磷腈(1)与具有不同末端基团(H,F,Cl,和Br)。通过元素分析和质谱分析,FT-IR和1 H,13 C和31 P NMR光谱对产物(3a-3d)进行表征。此外,化合物3a的结构也通过X射线晶体学确定。研究了新型环三磷腈化合物(3a-3d)的热行为和光谱性质,并将其结果进行了系列比较。
Effect of substituents on the UV spectra of supermolecular system: Silver nanoparticles with bi-aryl Schiff bases containing hydroxyl
作者:Chao-Tun Cao、Shimao Cheng、Jingyuan Zhang、Chenzhong Cao
DOI:10.1002/poc.3910
日期:2019.3
Effect of substituents on the ultraviolet (UV) spectra of supermolecular system involving silver nanoparticles (AgNPs) and Schiffbases was investigated. AgNPs and 49 samples of model compounds (MC), bi‐aryl Schiffbases containing hydroxyl (XBAY, involving 4‐OHArCHNArY, 2‐OHArCHNArY, XArCHNAr‐4′‐OH, and XArCHNAr‐2′‐OH), were synthesized. The size of AgNPs was characterized by transmission electron
Abnormal effect of hydroxyl on the longest wavelength maximum in ultraviolet absorption spectra for bis-aryl Schiff bases
作者:Chao-Tun Cao、Wei Zhou、Chenzhong Cao
DOI:10.1002/poc.3672
日期:2017.10
4‐HOArCH=NArY and XArCH=NArOH‐4′, and the second set consists of 2‐HOArCH=NArY and XArCH=NArOH‐2′. Their ultravioletabsorptionspectra were measured and investigated. A very interesting phenomenon was observed by analyzing their wave number νmax (cm−1) of longest wavelength maximum λmax (nm) of ultraviolet. Compared with the change regularity of the νmax of XArCH=NArY (where the X and Y excluded OH), the
Reaction of 2- and 4-(Arylmethylideneamino)phenols with Methyl 1-Bromocyclohexanecarboxylate and Zinc
作者:E. A. Nikiforova、D. V. Baibarodskikh、D. P. Zverev、M. V. Dmitriev、N. F. Kirillov
DOI:10.1134/s1070428021080066
日期:2021.8
Abstract 2- and 4-(Arylmethylideneamino)phenols react with Reformatskyreagent, obtained from methyl 1-bromocyclohexanecarboxylate and zinc, to form 3-aryl-2-[2-(or 4-)hydroxyphenyl]-2-azaspiro[3.5]nonan-1-ones. The reaction involves the initial addition of the organozinc reagent across the C=N double bond of the Schiff base and the subsequent intramolecular cyclization of the adduct via the nucleophilic
Design, synthesis, biological evaluation, and comparative Cox1 and Cox2 docking of p-substituted benzylidenamino phenyl esters of ibuprofenic and mefenamic acids
作者:Gehan H. Hegazy、Hamed I. Ali
DOI:10.1016/j.bmc.2011.12.030
日期:2012.2
is to reduce the GIT toxicity associated with acute and chronic NSAIDs use. Anti-inflammatory, analgesic as well as ulcerogenic activities of the prepared esters were evaluated in vivo and compared with that of ibuprofen as reference standard in all screenings, involving the carrageenan induced paw oedema model and hot plate method. Most of the synthesized esters showed remarkable analgesic and anti-inflammatory